GeForce GTX 950M vs GeForce GT 640M
We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 950M and 2GB VRAM GeForce GT 640M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 950M 's Advantages
Released 3 years late
Boost Clock1124MHz
More VRAM (4GB vs 2GB)
256 additional rendering cores
GeForce GT 640M 's Advantages
Lower TDP (32W vs 75W)
Score
Benchmark
FP32 (float)
GeForce GTX 950M
+199%
1439
GeForce GT 640M
480
Graphics Card
Mar 2015
Release Date
Mar 2012
GeForce 900M
Generation
GeForce 600M
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16
Clock Speeds
993 MHz
Base Clock
-
1124 MHz
Boost Clock
-
900 MHz
Memory Clock
900 MHz
Memory
4GB
Memory Size
2GB
DDR3
Memory Type
DDR3
128bit
Memory Bus
128bit
28.80GB/s
Bandwidth
28.80GB/s
Render Config
640
Shading Units
384
40
TMUs
32
16
ROPs
16
64 KB (per SMM)
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
256 KB
Theoretical Performance
17.98 GPixel/s
Pixel Rate
5.000 GPixel/s
44.96 GTexel/s
Texture Rate
20.00 GTexel/s
1439 GFLOPS
FP32 (float)
480.0 GFLOPS
44.96 GFLOPS
FP64 (double)
20.00 GFLOPS
Board Design
75W
TDP
32W
No outputs
Outputs
No outputs
Graphics Processor
GM107
GPU Name
GK107
N16P-GT
GPU Variant
N13P-GS
Maxwell
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.87 billion
Transistors
1.27 billion
148 mm²
Die Size
118 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.3
Vulkan
1.1
5.0
CUDA
3.0
5.1
Shader Model
5.1
